Window drain and ventilator



p Z9- ff. F. F. MURRAY ET AL WINDOW DRAIN ANDvENTILATQR Filed M'ay 11, 1944 Fo adafeal/T'Muafcfagj,

2 6 VI f y Z@ 7 1 Q ,f TLS a Y l Patented Apr. 2, 1946 UNITED STATES PATENT OFFICE WINDOW DRAIN AND VENTILATOR Forrest F. Murray and Clifford K. MacDonald, Brockton, Mass.

Application May 11, 1944, Serial No. 535,116

2 Claims.

There is now in extensive use a construction of combined screen and storm window in which a rectangular frame is permanently secured to the window frame, with this permanent frame abutting the window sill. Storm window sash and screen sash are readily insertable and removable from this permanent frame, either the one or the other being installed as the season requires.

The object of the present invention is to provide an eiiicient means for Ventilating and draining the space between the regular inner window of the building and the outer window consisting of the permanent frame with either the storm or screen sash installed therein. When, for example, the storm window sash is in place changes in the temperature and humidity of the air trapped between the inner and outer windows due to the differential in the conditions between the room in the building and the outside air frequently cause the objectionable collection of moisture or ice on the window panes. Further as a result ice or water forms or collects upon the window sill between the inner window and the outer permanent frame. And when the screen sash is in place, rain beating in through the screen is trapped between the inner window and the outer permanent frame.

The object of the invention is further to provide a simple self-contained device which may be readily installed on the window sill between it and the permanent frame and which will enable the space between the inner and outer windows to be ventilated thereby and also enable any water collecting on the window sill between the inner and outer windows to be drained out therethrough.

These and other objects and features of the invention will appear more fully from the accompanying description and drawing and will be particularly pointed out in the claims` .In the drawing:

Fig. 1 is a view in perspective of a sufcient portion of the window opening of a building to illustrate the general construction and application oi the invention.

Fig. 2 is a top plan view of a combined drain and ventilator device embodying the preferred form of the invention.

Fig. 3 is a view in rear elevation of the construction shown in Fig. 2.

Fig. 4 is a front elevation of the entire window opening of a building illustrated in Fig. 1, with a screen sash shown in place at the bottom and a window sash at the top with the permanent frame and with the device of the invention in place.

An ordinary type of window opening construction is illustrated comprising an Outer frame I on the face of the building 2 surrounding the window opening, the usual window sill 3 sloping downwardly and outwardly and the window sash 4 forming the regular or inner window. This general construction which may be of various forms is well known and common and needs no further description.

The combination storm window and screen construction which has come largely into use involves a rectangular frame 5 which is permanently and tightly secured to the outer window frame I as by screws 6 with the lower member 1 of this permanent frame fitting snugly against.

the upper surface of the window sill 3. This permanent frame is so constructed that either storm window sash or screen sash may be readily' placed therein and removed therefrom from the inside of the building so that either the storm window or the screen maybe employed as the season requires. One storm window sash is indicated at the V`top and one screen sash at the bottom in K The device for draining and. Ventilating the space between the inner window and the outer window illustrated in detail in Figs. 2 and 3 and embodying the invention consists of a tapering hollow metal casing, the length of which is substantially equal to the thickness of the member 1 of the permanent frame which rests upon the window sill. This casing is open at the smaller outer end as seen in Figs. 1 and 4. The bottom 9 of the casing is liat so as to engage and rest upon the window sill. The larger inner end is provided with a. wall'l reticulated as by means of the holes I I, the lower rowof which extend to the lower surface of the at bottom 9 of the casing. This inner end is provided with a movable closure shown as a ilat plate I2 piVoted at I3 to an extension I 4 of the wall I0 and provided with a small handle I5. The top of this tapering hollow casing may vary in shape but is illustrated as formed in two angularly disposed planes meeting at the center.

The lower member 'I of the permanent frame resting upon the window sill is provided with an outwardly tapered notch to co-operate with the upper surface of the tapering metal casing so outer window and that any water collectingon the window sill will drain out through the casing, the lower row of holes Il insuring the maximum drainage., The reticulated inner end wall of the casing prevents the entrance into the space between the windows of insects and pa1'' enables the device to be closed entirely in the case of a storm or whenever desired. The device itself may bereadilyremovedfroml theinside and replaced for cleaning any dust or dirt that maycollect either in the device itself or on the window sill in the space between the windows.

There is thus provided by the, invention avery simple and eiicient device readily installed in,v

existing frames or furnished in connectionl with new frames by which the space between the inner and outer windows may.l be ventilated; and;

drained as conditions require. Having thus described the invention, what is vcla-lined as; neu@k andv desired, to be secured: by Letters;V Patient;` is.;

1. The combination with an inner Window, an outer window and the window sill of a building yof a combined drain and ventilatorL for the space 4ticles of dirt of any substantial size. The closure 2;*'1-he combination as dened in claim l, in

which the lowermost openings of the reticulated WallE extend,l to, the lower surface of the at bottom of the casing.

FOREES'I MURRAY. CLIFFORD K. MACDONALD. 

